are preserving u.s. military powers, stabilizing afghanistan, and forging a real and lasting partnership with iraq. panetta replaces robert gates who retired after power decades in public service. and a ceremony marking his retirement president obama surprised gates by awarding him the presidential medal of freedom. prince william and his wife, katheri catherine, continue their tour of canada. the duke and duchess are keeping busy traveling throughout the country and meeting with politicians. military members and hospital patients and even local homeless youth. the royal couple are also finding time for fun with cooking lessons and drag ever dragon boat races. after they wrap up their tour they head to california for three days. >> reporter: we see doctors on medical shows all the time, but is real life like it is on tv? i'm getting the chance to find out! it's shortly after sunrise at long island college hospital in brooklyn, where i'll spend the day shadowing one of their top doctors. hello, it's nice to meet you. i'm nicole. >> i'm dr. millicent comrie. >> reporter: all right, so let'